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    • 74. 发明专利
    • Seamless can body
    • 无缝CAN体
    • JP2011255919A
    • 2011-12-22
    • JP2010131138
    • 2010-06-08
    • Toyo Seikan Kaisha Ltd東洋製罐株式会社
    • TOMARU HIDEKAZUTANAKA SHOTAFUKUMOTO HAYATOOKUDA TOSHIKI
    • B65D1/16B65D8/08
    • B65D1/165B65D25/14
    • PROBLEM TO BE SOLVED: To provide a seamless can body configured in such a manner that, even if the can body has a reduced wall thickness, the flatness of the center panel of the bottom of the can body can be stably maintained and the can body has high pressure resistance, high formability, and excellent properties for an internal pressure test.SOLUTION: The seamless can body includes: a ground contact rim section protruding outward from the can body; an annular recess section provided adjacent to the inner side of the ground contact rim section and protruding to the inside of the can body; and a flat center panel forming the bottom of the can body and extending continuously from the inner peripheral side of the annular recess section with a corner part provided therebetween. The curvature radius Rof the corner section is in the range of 1.5 mm
    • 要解决的问题:为了提供一种无缝罐体,其配置成使得即使罐体具有减小的壁厚,罐体底部的中心板的平坦度也可以稳定地保持, 罐体具有高耐压性,高成型性和优异的内压试验性能。 解决方案:无缝罐体包括:从罐体向外突出的接地接触边缘部分; 环形凹部,其设置在所述接地边缘部的内侧附近并且突出到所述罐主体的内部; 以及形成罐体的底部并且从环形凹部的内周侧连续地延伸的平坦的中心面板,其间设置有角部。 拐角部分的曲率半径R 3 在1.5 mm 3 ≤6.0mm的范围内, 环形凹部为1.5mm以上且小于3.0mm,中心面板的平坦度(BSD)为-0.15〜0.15mm。 版权所有(C)2012,JPO&INPIT